| 双差分定位法在柴达木西部油田微地震定位中的应用研究 |
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| 引用本文： | 徐小明,史大年.双差分定位法在柴达木西部油田微地震定位中的应用研究[J].高原地震,2008,20(3):7-12. |
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| 作者姓名： | 徐小明 史大年 |
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| 作者单位： | 中国地质科学院矿产资源研究所,北京,100037 |
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| 基金项目： | 国家油气专项基金
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| 摘 要： | 概述了双差分定位法及其基本原理，重点介绍了双差分定位法在柴达木西部狮子沟油田微地震定位中的应用：对研究区内的微地震定位后，发现微地震分布与区内的断裂带具有一定的相关性，另外，油田油井的生产与注水对微地震的诱发有着影响。双差分定位后，数据残差平均值为0．36s，水平和垂直方向的估算误差平均值都在0．15m左右。利用高精度的双差分定住结果，可以对深层地质构造进行解析，为油田油气资源调查和评价提供信息。
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| 关 键 词： | 双差分定位法 微地震 速度模型 背斜构造 断裂带 |
RELOCATION OF MICRO - EARTHQUAKE IN SHIZIGOU OIL FIELD OF THE WESTERN CAIDAM USING THE DOUBLE DIFFERENCE TECHNIQUE |
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| XU Xiao-ming,Shi Da-nian.RELOCATION OF MICRO - EARTHQUAKE IN SHIZIGOU OIL FIELD OF THE WESTERN CAIDAM USING THE DOUBLE DIFFERENCE TECHNIQUE[J].Plateau Earthquake Research,2008,20(3):7-12. |
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| Authors: | XU Xiao-ming Shi Da-nian |
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| Institution: | XU Xiao - ruing, Sift Da - nian (Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China) |
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| Abstract: | The double difference method and its basic principle were summarized, which concentrate on its application in relocation of micro-earthquake in Shizigou oil field of western Caidam. After micro-earthquake location, the results showed that the epicenter distribution has significant correlations with the fracture zone in the study region. Besides, the fluid injection through the wells has a certain effect on inducing micro-earthquake. The average residual of relocated events is 07. 36s while the average estimated error is about 0. 15m in both ho-rizontal and vertical directions using the accuracy results of double difference location, the authors can provide some information to investigation and evaluation of oil and gas resources via the analysis of deep geological structure. |
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| Keywords: | Double difference Method Micro-earthquake Velocity model Anticline structure Fracture zone |
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